[gnome-commander] Automatically install gcc 8 in Ubuntu in Dockerfile

[Uwe Scholz <uwescholz src gnome org>]

commit 3002c43f43e98d725d50948c31f42cf2d19d1835
Author: Uwe Scholz <u scholz83 gmx de>
Date:   Sun Jan 27 19:25:52 2019 +0100

    Automatically install gcc 8 in Ubuntu in Dockerfile

 Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/Dockerfile b/Dockerfile
index cc5b8642..6ae67c8a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,7 +10,7 @@ RUN \
   apt-get install -yq sudo && \
   echo $LANG && \
   echo $LC_ALL && \
-  sudo apt-get install gcc-8 g++-8 && \
+  sudo apt-get install gcc-8 g++-8 -y && \
   sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-7 700 --slave /usr/bin/g++ g++ 
/usr/bin/g++-7 && \
   sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-8 800 --slave /usr/bin/g++ g++ 
/usr/bin/g++-8 && \
   sudo apt-get build-dep gnome-commander -y && \